2002-03-30  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* tools.h : change exp_smoothing_tool, averages_tool, ranking_tool
	  and sampling_tool into cmd_analysis_tools engines
	* dialog-analysis-tools.c : make fourier analysis, moving averages,
	  rank and percentile, and sampling tools undoable
	* src/dialogs/dao-gui-utils.h (parse_output) : change return type
	* src/dialogs/dao-gui-utils.c (parse_output) : return dao

2002-03-30  Andreas J. Guelzow <aguelzow@taliesin.ca>

	* src/tools/analysis-tools.c :  make fourier analysis, moving averages,
	  rank and percentile, and sampling tools undoable
	* dao.c (dao_set_style) : new
	(dao_set_percent) : use offsets by calling dao_set_style
	(dao_set_italic) : ditto